G.skill Ripjaws X Series 16gb (4 X 4gb) 240-pin Ddr3 Sdram Ddr3 1333 (Pc3 10666) Desktop Memory Model F3-10666cl9q-16gbxl 240-Pin DDR3 SDRAM; DDR3 1333 (PC3 10666); F3-10666CL9Q-16GBXL; 16GB (4 x 4GB) Cas Latency: 9; Unbuffered; Voltage: 1.5V Timing: 9-9-9-24; ECC: no; Manufacturer Warranty: Lifetime limited